Ucingo olukhuselweyo

 Ucingo loMbane kunye neCable 

 

Iingcingo zombane kunye neentambo  zenza umqolo weenkqubo zale mihla zokuhambisa umbane, okwenza ukuba ukuhanjiswa kombane kukhuseleke nangokufanelekileyo kumakhaya, kumashishini nakwiziseko ezingundoqo. Kwisiseko sabo, iingcingo zombane zi-conductors ngabanye-ngokuqhelekileyo intambo enye okanye isiseko esiqinileyo setsimbi eyenzelwe ukuthwala umbane ukusuka kwelinye iphuzu ukuya kwelinye. Ngokwahlukileyo koko, iintambo ziquka iingcingo ezininzi (ezihlala zimbini okanye ngaphezulu) ezidityaniswe kunye ngaphakathi kwisingxobo sangaphandle esikhuselayo, esizivumela ukuba zilawule usetyenziso oluntsonkothileyo olufana nezixhobo zombane, iisekethe zokukhanyisa, okanye ukuhanjiswa kwedatha ecaleni kwamandla.

Umahluko ophambili ulele kulwakhiwo kunye nenjongo yazo: ucingo olunye lunokwanela uqhagamshelo olulula, olune-voltage ephantsi, njenge-jumper lead in electronics, kanti iintambo zibonelela ngolungelelwaniso oluphuculweyo, ukhuseleko lomatshini, kunye nokukwazi ukuthwala iisekethe ezininzi (umz., ukutshisa, ukungathathi hlangothi, kunye neengcingo eziphantsi komhlaba kwintambo eqhelekileyo yendlu). Oku kuhlanganiswa kunciphisa ukuphazamiseka kwe-electromagnetic, kuphucula ukuqina ngokuchasene nomonakalo womzimba, kunye nokwenza lula ukufakwa kwimibhobho okanye iindonga.

 

 Iintlobo zeeNcingo zoMbane 

 

 1. ucingo oluqinileyo 

 

Iingcingo eziqinileyo zibandakanya enye, intsimbi yentsimbi eqhubekayo -ngokuqhelekileyo ubhedu okanye i-aluminiyam-etsalwa kububanzi obufanayo ngaphandle kokuqhawula kwangaphakathi okanye amalunga. Olu lwakhiwo lwe-monolithic lunikezela nge-conductivity yombane egqwesileyo  kunye neyona ndlela iphantsi yokumelana  ne-gauge enikiweyo, njengoko kungekho zithuba zangaphakathi okanye ukuchasana koqhagamshelwano phakathi kweentambo. Isiphumo kukuhla kwamandla ombane okuncinci kunye nokuveliswa kobushushu, okwenza ucingo oluqinileyo lube lolona khetho lukhethwayo lwesigxina, ufakelo olusisigxina  olufana neendawo zokuhlala kunye neengcingo zesakhiwo sorhwebo, iisekethe ezingaphakathi eludongeni, kunye nee-conduit runs.

Ukuqina kwayo kuqinisekisa uxhulumaniso oluzinzileyo kwi-screw terminals, iibhokisi ze-junction, kunye neendawo zokuthengisa, ukunciphisa umngcipheko wokukhulula ixesha elide. Ubukhulu obuqhelekileyo bubandakanya i-14 AWG (ye-15-amp lighting circuits), i-12 AWG (20-amp general-purpose), kunye ne-10 AWG (izixhobo ze-30-amp), zonke zilinganiswe phantsi kwezikhokelo ze-NEC. Nangona kunjalo, ucingo oluqinileyo aluguquki -ukugoba ngokuphindaphindiweyo kunokubangela ukuqina komsebenzi kunye nokuphuka ekugqibeleni-ngoko ayifanelekanga kwizicelo ezibandakanya ukunyakaza okanye ukungcangcazela. Ukhuseleko, iiconductor eziqinileyo zihlala zikhuselwe (umzekelo, ngeTHHN/THWN thermoplastic) kunye nombala-coded ngokomsebenzi.

 

 2. Intambo yocingo 

 

Iingcingo eziphothiweyo zenziwe ngeentambo ezininzi ezicekethekileyo  (kaninzi ziyi-7, 19, okanye ngaphezulu, kuxhomekeke kwi-gauge kunye neklasi yokuguquguquka) eziphothiweyo kunye kwipatheni ye-helical ukwenza umqhubi omnye. Olu luyilo luphucula ngokukhawuleza ukuguquguquka komatshini  kunye nokumelana nokukhathala , ukuvumela ucingo ukuba lugobe ngokuphindaphindiweyo ngaphandle kokuphulwa-inzuzo ebalulekileyo kwizixhobo ezihambayo , iintambo eziphathekayo, iintambo zokwandisa, kunye neerobhothi.

Umzekelo, i-12 AWG erhintyelwe ucingo lwe-THHN lusenokuqulatha imicu esi-7 ye-~26 AWG yobhedu, enikezela ngokuphantse ukufana okufanayo kucingo oluqinileyo kodwa kunye neradiyasi egobayo ephantsi kangange-4-6 ukuphinda-phindwe ngedayamitha yentambo. Ulungelelwaniso lwe-Stranded luhlelwa ngokwemigangatho efana ne-ASTM B258 (umzekelo, iKlasi B yokusetyenziswa ngokubanzi, iKlasi C yokuguquguquka ngakumbi, kunye neKlasi ye-K ye-ultra-fine strands kwizicelo zonyango okanye i-aerospace). Ngelixa iphezulu kancinane ekuxhathiseni (~ 1–3% ngaphezu kokuqina ngenxa yejometri exineneyo), umahluko awuhoywa kuninzi lwezicelo zamandla. Ucingo olubambeneyo luyimfuneko kwiintambo zeSOOW eziphathwayo , iintambo , zokubopha iintambo , kunye nesixhobo somatshini , apho ukungcangcazela okanye ukubekelwa indawo ngokutsha kuya kuqhawula iikhondaktha eziqinileyo.

 

 3. Ucingo lweKopha oluTinkiweyo 

 

Ucingo lobhedu olunkonkxiweyo lubonisa umaleko obhityileyo wetoti efakwe kwi-electroplated  kwi-strand nganye yobhedu (okanye i-conductor yonke ikwimo eqinileyo), idala umqobo okhuselayo ngokuchasene ne-oxidation kunye nokuhlwa . Ubhedu olucocekileyo, ngelixa luqhubela phambili kakhulu, lwenza i-copper oxide kunye ne-verdigris xa ibonakaliswe kumswakama, umoya, okanye i-salts-impendulo ezandisa ukuchasana nokudibana kunye nokunciphisa ukusebenza. Ukugquma kwenkcenkce kuyakuthintela oku, ngakumbi kwiindawo zaselwandle , kwiimozulu ezifumileyo , ufakelo oluphantsi komhlaba , okanye izityalo zemichiza..

Ngokuqhelekileyo ifumaneka kwiintambo zesikhephe  (idibana nemigangatho ye-ABYC), iintambo zonxibelelwano ze , -solar panel ezidibanisayo , kunye nezixhobo zomsindo , ucingo olufakwe kwinkonkxa lugcina ukuthembeka kwexesha elide nangona luphantsi kwesitshizi samanzi etyuwa, i-condensation, okanye i-galvanic corrosion. Inkqubo ye-tinning inciphisa kancinci i-conductivity (~ 3-5% ngaphantsi kobhedu olungenanto), kodwa oku kulungiswa ngokuhlala kwayo. Ubhedu olufakwe inkonkxa luxatyiswa ngokukodwa kwiintambo zebhetri ezithambileyo zaselwandle  kunye neentambo zokubopha iimoto  ezivezwe kwityuwa yendlela. Imigangatho efana ne-MIL-W-16878 ichaza iikhondaktha ezinkonkxiweyo zokusetyenziswa kwezomkhosi kunye nenqwelomoya, iqinisekisa ukuthengiswa kunye nokumelana 'nokubola kohlaza' kumashumi eminyaka.

 

 Ulungelelwaniso lweeNcingo zoMbane ezahlukeneyo 

 

 1. ucingo oluqinileyo 

 

Ucingo oluqinileyo lubandakanya enye, intsimbi yentsimbi eqhubekayo (ngokuqhelekileyo ubhedu okanye i-aluminium). Olu luyilo lunikeza ukuhanjiswa kombane okuphezulu kunye nokuchasana okuncinci ngenxa yokungabikho kwezithuba okanye iindawo zoqhagamshelwano phakathi kweentambo. Lolona lufanelene kakhulu nofakelo olusisigxina, olusisigxina olufana neengcingo eziseludongeni, ii-conduit runs, okanye iibhokisi ezidityanisiweyo apho ucingo luhlala lumile lwakuba lufakiwe. Ukuqina kwayo kuqinisekisa unxibelelwano olukhuselekileyo, oluhlala ixesha elide kwii-terminals kunye nee-outlets, kodwa luba lukhuni phantsi kokugoba okuphindaphindiweyo kwaye luthande ukusilela ukudinwa ukuba luguquguquka.

 

 2. Intambo yocingo 

 

Ucingo oluphothiweyo luqulunqwe ngemisonto emininzi yentsimbi ebhityileyo ephothiweyo kunye kwipatheni ye-helical ukwenza umqhubi omnye. Olu lwakhiwo lubonelela ngokuguquguquka okugqwesileyo kunye nokuchasana nokudinwa koomatshini, okwenza kube yinto efanelekileyo kwizicelo ezibandakanya ukuhamba rhoqo, ukungcangcazela, okanye ukugoba-njengeentambo eziphathwayo, iintambo zemoto, iirobhothi, iintambo zeaudio, kunye nokunxibelelana koomatshini. Ngelixa inoxhathiso oluphezulu kancinane kunocingo oluluqilima lwegeyiji efanayo, umahluko awuhoywa kuninzi lwezicelo zamandla, kwaye ukuqina kwayo kwindawo eguquguqukayo kuyodlula le ntsilelo incinci.

 

 Ukufakwa kweKhowudi yoMbala yeeNcingo zoMbane 

 

Iingcingo zombane zinombala-khowudi ukuqinisa ukhuseleko, ukwenza lula ukuchongwa, kunye nokuqinisekisa uqhagamshelo oluchanekileyo ngexesha lofakelo, ulondolozo, kunye nokusombulula ingxaki. Imibala esemgangathweni ibonisa imisebenzi ethile kwiinkqubo zamandla e-AC (ngokuqhelekileyo i-120/240 V eMntla Melika okanye i-230 V kumazwe ngamazwe). Ukuthobela ezi ngqungquthela zifunwa ngeekhowudi zombane ezifana ne-NEC okanye i-IEC.

 

 Mnyama kunye noBomvu 

 

Iingcingo eziphilileyo okanye ezishushu ezithwala umsinga osebenzayo ukusuka kumthombo wamandla ukuya kumthwalo.

·  Umnyama  udla ngokusetyenziswa kumlenze wokuqala oshushu (Isigaba A okanye L1).

·  I-Red  isetyenziselwa umlenze wesibini oshushu (iSigaba B okanye i-L2) kwiisekethe ze-240 V, iisekethe zegatsha ze-multi-wire, okanye abahambi beendlela ezintathu zokutshintsha.

·  Kwiinkqubo zamandla ombane aphezulu, umbala omdaka, o-orenji, okanye omthubi  unokubonisa izigaba ezongezelelweyo.

 

 Mhlophe okanye Grey 

 

Iingcingo ezingathathi hlangothi  ezigqibezela isekethe ngokubuyisela okwangoku kumthombo wamandla (ngokuqhelekileyo ziqhagamshelwe kwibhasi engathathi hlangothi kwiphaneli).

·  Umhlophe  usemgangathweni kwiindawo ezininzi zokuhlala kunye neecingo ezilula zorhwebo.

·  IGrey  ivumelekile njengenye indlela kwiisistim zemibhobho.

·  Okungathathi hlangothi makungaze kudityaniswe okanye kutshintshwe  (ngaphandle kwezicelo zolawulo ezikhethekileyo).

 

 Ubhedu oluluhlaza okanye oluBare 

 

Iingcingo eziphantsi komhlaba  (izixhobo zokumisa izixhobo) ezibonelela ngendlela ephantsi yokumelana nomhlaba ngenxa yemisinga ephosakeleyo, ukuthintela ukothuka kunye nokwenza izixhobo zokukhusela (izaphuli, ii-GFCIs) zihambe.

•  okuluhlaza okanye  Ukugquma okuluhlaza okunomgca omthubi  kusetyenziswa kwimihlaba egqunyiweyo.

•  Ubhedu olungenanto  luxhaphakile kwiintambo ezingezizo ezentsimbi.

•  Iingcingo ezisezantsi azize zisetyenziswe ukuthwala umsinga oqhelekileyo.

 

 Amanqaku awongezelelweyo 

 

·  Kwiinkqubo ze-DC , ezibomvu  = ezilungileyo, ezimnyama  = ezingalunganga, kunye nomhlophe okanye oluhlaza  = umhlaba.

·  IBlue  isoloko isetyenziselwa iingcingo ezishushu ezitshintshiweyo  okanye ulawulo lwevoltage ephantsi.

Iingcingo  zokuphinda zichonge : Iingcingo ezimhlophe ezisetyenziswa njengobushushu kufuneka ziphawulwe ngeteyiphu emnyama okanye ebomvu ekuyekweni.

·  Soloko uqinisekisa ngesixhobo sokuvavanya amandla ombane  phambi kokuba usebenze—umbala wodwa awusosiqinisekiso sokuphelisa amandla.

Ikhowudi yombala efanelekileyo  iyanciphisa iimpazamo ze-wiring, ikhusela ukuthuthumela, kwaye iqinisekisa ukuthotyelwa kwemigangatho yokhuseleko.

 

 Ubungakanani beeNcingo zoMbane kunye neeGeyiji 

 

Ubungakanani bocingo, oluchazwe kwi -AWG (i-American Wire Gauge)  okanye i-mm² , imisela ngokuthe ngqo ubungakanani be-ampacity — obona mbane buphezulu bunokuqhutywa lucingo ngaphandle kokutshisa. Incinci inombolo ye-gauge , i-wire iyancipha  kwaye iphezulu umthamo wangoku . Ubungakanani obufanelekileyo bunqanda ukuhla kwamandla ombane, ukwanda kobushushu, kunye neengozi zomlilo.

·  14 AWG  (≈ 2.1 mm²): Ilinganiswe kwii -amps eziyi-15 . Ngokuqhelekileyo isetyenziselwa ukukhanyisa iisekethe , zokujonga umsi , kunye nezixhobo zenjongo jikelele  kumagumbi okulala okanye iindawo zokuhlala. Ubuninzi bobude besekethe: ~50–75 ft ukukhawulela ukuhla kwamandla ombane.

·  12 AWG  (≈ 3.3 mm²): Ilinganiswe kwii -amps ezingama-20 . Umgangatho wekhitshi, igumbi lokuhlambela, kunye nezixhobo zegaraji , izixhobo ezincinci , kunye neesekethe zokuhlamba iimpahla . Ifuneka ngekhowudi uninzi lwe-120 V, 20 A iziphaluka zesebe.

·  10 AWG  (≈ 5.3 mm²): Ilinganiswe ngee -amps ezingama-30 . Isetyenziselwa izifudumezi zamanzi zombane , zefestile zomoya , zomoya ezomisi zombane , kunye neepaneli ezincinci . Iyimfuneko kumbane ophezulu we-240 V izixhobo.

 

 Izikhokelo eziPhambili 

 

·  Sebenzisa iitheyibhile ze-NEC ze-ampacity  (umzekelo, iTheyibhile 310.16) ngokusekelwe kuhlobo lwe-insulation (60 ° C, 75 ° C, 90 ° C), izinto zomqhubi (ubhedu vs. aluminium), kunye nobushushu be-ambient.

·  Ucingo lweAluminiyam  lufuna ukunyuswa  (umzekelo, i-10 AWG Al = 12 AWG Cu yee-amps ezifanayo).

·  Ukuqhuba ixesha elide  (> 50 ft), bala ukuhla kwamandla ombane  (≤3% kucetyiswa).

·  Ukugqithisela  kukhuselekile kwaye kuphucula ukusebenza kakuhle; ukuthoba ngaphantsi  kubangela ukutshisa kakhulu kunye nohambo lwe-breaker.

 

Soloko udibanisa igeyiji yocingo nesayizi yebreaker kunye nemfuno yomthwalo  ukuqinisekisa ukhuseleko kunye nokuthotyelwa.

 

 Ukusetyenziswa kocingo loMbane ​ 

 

Iingcingo zombane zibalulekile kumacandelo ahlukeneyo, ukunika amandla ukuhanjiswa kwamandla, ukuhanjiswa komqondiso, kunye nolawulo lwenkqubo. Uyilo lwazo-izinto zokuqhuba, ukugquma, kunye nokulungelelaniswa-kwenzelwe ukuhlangabezana nokusebenza okukhethekileyo, ukhuseleko kunye neemfuno zendalo.

 

 IiNcingo zokuHlala 

 

Izibane zamandla, izinto zokuhombisa, iiswitshi, kunye nezixhobo zasekhaya ezindlwini nasezindlini.

·  Isebenzisa intambo ye-NM-B  (12–14 AWG yobhedu) kwiisekethe zesebe eziyi-120 V.

·  Ixhasa ukhuseleko lwe-GFCI/AFCI , iinkqubo zasekhaya ezihlakaniphile , kunye nezibane ze-LED.

·  Uqinisekisa ukuthotyelwa kweekhowudi zasekuhlaleni zombane wemihla ngemihla okhuselekileyo, othembekileyo.

 

 IiNkqubo zoShishino 

 

Uqhuba iimoto, iijenereyitha, iimpompo, ii-PLCs, kunye noomatshini abanzima kwiifektri nakwizityalo.

 

·  Uqesha iTHHN/THWN  kumbhobho, intambo ye-MC , okanye intambo yetreyi  (6 AWG nangaphezulu).

·  Iphatha i-480 V ephezulu yangoku , ye-3-phase , variable frequency drives (VFDs) , kunye neemeko ezinzima  (ubushushu, ioli, i-vibration).

·  Ifuna isikhuselo  kunye nesikrweqe  sokhuselo lwengxolo kunye nokhuseleko lomatshini.

 

 Iintambo zeemoto 

 

Idibanisa iibhetri, izibane, izivamvo, ii-ECUs, i-infotainment, kunye neenqwelo zombane zemoto (EV).

 

·  Isebenzisa ikopolo ebotshelelweyo, enkonkxiweyo  ene -insulation edityanisiweyo enqamlezileyo  (umz., TXL, GXL) ukuze ube bhetyebhetye kunye nokuxhathisa umhlwa.

·  Isebenza kumaqondo obushushu agqithisileyo  (−40°C ukuya ku-125°C), ukungcangcazela, kunye nokuba sesichengeni solwelo.

·  Ixhasa i-CAN ibhasi ye- , LIN , kunye neentambo eziphezulu ze-orenji ezinejacket  kwi-hybrids / EVs.

 

 Unxibelelwano ngocingo 

 

Ihambisa ilizwi, idatha, ividiyo, kunye nemiqondiso yebroadband kuthungelwano kunye neziseko.

 

·  Kubandakanya i-coaxial (RG-6)  ye-cable TV / i-intanethi, i-twisted pair (Cat5e/6/6A)  ye-Ethernet, kunye ne -fiber optic  (engeyombane kodwa ihlala idibene).

·  Ifuna i-capacitance ephantsi , shielding , kunye ne-impedance ehambelanayo  (50 Ω okanye 75 Ω) ekusebenzeni kwesantya esiphezulu, kwilahleko ephantsi.

·  Isetyenziswa zekhebhuli ezicwangcisiweyo , kwiintambo zefowuni , kunye nezikhululo ezisisiseko ze-5G.

  

 Indlela yokukhetha ucingo oluLungileyo loMbane 

 

Ukukhetha ucingo oluchanekileyo lombane kuqinisekisa ukhuseleko, ukusebenza kakuhle, kunye nokuthembeka kwexesha elide. Soloko uvavanya isicelo kunye nokusingqongileyo phambi kokuthenga. Nantsi imiba ephambili ekufuneka iqwalaselwe:

 

 Umthamo wangoku (Ampacity) 

 

Ucingo kufuneka luthwale ngokukhuselekileyo ubuninzi bangoku obulindelekileyo ngaphandle kokushisa.

 

•  zokujonga i-ampacity Iitheyibhile  (umzekelo, iTheyibhile yeNEC 310.16) ngokusekelwe kwigeyiji yocingo, imathiriyeli yomqhubi, kunye nomlinganiselo wokugquma.

·  Umzekelo: 14 AWG ubhedu (15 A), 12 AWG (20 A), 10 AWG (30 A).

·  I-Factor kwimithwalo eqhubekayo  (iiyure ze-3 +): i-derete ukuya kwi-80% ye-breaker rating.

 

 Ixabiso lombane 

 

I-insulation kufuneka imelane ne-voltage yenkqubo kunye nomda wokhuseleko.

 

·  300 V : Ukukhanya okuphantsi kwe-voltage okanye iisekethe zokulawula.

·  600 V : Umgangatho we-120/240 V i-wiring yokuhlala kunye nezorhwebo.

·  1,000 V nangaphezulu : Ilanga, ukutshaja kwe-EV, okanye i-industrial feeder.

·  Umlinganiselo wombane ongaphantsi komlinganiselo ubeka emngciphekweni wokuqhawuka kwe-insulation kunye ne-arcing.

 

 Uhlobo lwe-Insulation 

 

Izixhobo ezahlukeneyo zibonelela ngokuthe ngqo ngobushushu, oomatshini, kunye nokumelana neekhemikhali:

 

·  I-PVC : Ixabiso eliphantsi, i-flame-retardant; ilungile kwiindawo ezomileyo/ezimanzi (THHN, NM-B).

·  XLPE : Ukushisa okuphezulu kunye nokuxhathisa ukufuma; ilungele ukusetyenziswa okumanzi okanye ngaphantsi komhlaba (XHHW, UF).

·  I-Rubber / Thermoset : I-Flexible kwaye ihlala ixesha elide; isetyenziswe kwiintambo eziphathekayo (SOOW, SJT).

•  Tshatisa bobushushu , ubushushu , kunye nokuba sesichengeni kweekhemikhali.

 

 Iimeko zokusingqongileyo 

 

Indawo yokufakela imisela iimpawu ezifunekayo zokukhusela:

 

·  Ukomisa Ngaphakathi : Intambo eqhelekileyo yeTHHN okanye yeNM.

·  Kumanzi/Kumanzi : THWN, XHHW, okanye UF.

·  Ukukhanya kwelanga okuthe ngqo : Ibhatyi ekwaziyo ukumelana ne-UV (umz., UF, USE-2).

·  Umngcwabo : Ungcwatywa ngokuthe ngqo (UF) okanye umjelo okhuselweyo.

·  Umzi-mveliso : Ukumelana ne-oyile, uhlobo lwezixhobo, okanye ubushushu obuphezulu.

·  Iindawo eziNdle ukonakala : Ikopolo enkonkxiweyo okanye iibhatyi ezikhethekileyo.

 

 Imigangatho yoKhuseleko kunye neziQinisekiso 

 

Sebenzisa kuphela iingcingo ezidweliswe nezibhalwe zii-arhente ezaziwayo zovavanyo:

 

·  I-UL , CSA , ​​okanye iimpawu ze -ETL  ziqinisekisa ukuthotyelwa kwemigangatho yokhuseleko.

·  Landela iikhowudi zombane zasekuhlaleni  (umz., NEC, CEC, IEC).

·  Qinisekisa iireyithingi zedangatye  (FT1, FT4) kunye neqondo lobushushu  (60°C, 75°C, 90°C).

•  Ziphephe iimveliso zomgunyathi okanye ezingahlawulwanga—zibeka imingcipheko yomlilo nezothuso.

 

Ingcebiso yePro:  Ngexesha elide, bala i-voltage drop (≤3% icetyiswa). Sebenzisa ucingo oluphothiweyo ukuze ube bhetyebhetye kwaye luqine ukwenzela ukupheliswa okusisigxina. Xa ungaqinisekanga, qhagamshelana nosombane onelayisensi okanye ubhekisele kwiincwadi zekhowudi ezisemthethweni.

 

 Iingcebiso zoKhuseleko kuFakelo lweeNcingo zoMbane 

 

Iintambo zombane zinokuba yingozi xa zingaphathwanga kakuhle, nto leyo ekhokelela ekothukeni, emlilweni, okanye ekonakaleni kwezixhobo. Soloko ubeka phambili ukhuseleko ngokulandela iikhowudi zombane zasekhaya (umzekelo, i-NEC e-US) kunye neengcali zokubonisana xa uthandabuza. Ngezantsi luluhlu olwandisiweyo lweengcebiso ezibalulekileyo:

 

•  Ucime umbane ngalo lonke ixesha phambi kokuba usebenze kuzo naziphi na iintambo.  Fumana i-breaker main okanye ibhokisi ye-fuse kwaye ucime isiphaluka. Sebenzisa i-voltage tester engadibananga ukuqinisekisa ukuba umbane ucinyiwe-nangona emva kokuguqula iswitshi. Vala ngaphandle kwaye uthegi i-breaker ukunqanda ukuphinda kusebenze ngengozi.

 

·  Ungaze ulayishe kakhulu iisekethi okanye usebenzise iingcingo ezinobukhulu obungaphantsi.  Bala umthwalo (ii-amps) zesekethe kwaye uyitshatise kwigeyiji yocingo (umzekelo, i-14 AWG ye-15-amp circuits, 12 AWG ye-20-amp). Ukulayisha ngaphezulu kubangela ukushisa; sebenzisa ifomula: Power (W)=Voltage (V)×Yangoku (A) ext{Power (W)} = ext{Voltage (V)} amaxesha ext{Yangoku (A)}Amandla (W)=IVoltge (V)×Yangoku (A) Kwisekethe eqhelekileyo ye-120V, hlala phantsi kwe-80% ye-breaker rating 2 kwi-1 eqhubekayo, i-5A ngokuqhubekayo umaphuli).

 

•  Hlola iingcingo rhoqo ukubona iimpawu zomonakalo okanye ukuguga.  Khangela ukuqhekeka, ukuqhekeka, ukujika kombala, okanye ukubola. Hlola iindawo ezidityanisiweyo, iivenkile, kunye nezixhobo nyanga zonke. Shintsha iindawo ezonakalisiweyo ngokukhawuleza-ubhedu oluveziweyo lunokudubula kwaye luvutha izinto ezikufutshane.

 

·  Sebenzisa izihlanganisi ezifanelekileyo kunye nezixhobo ngexesha lofakelo.  Sebenzisa amandongomane ocingo, iziqhagamshelo zecrimp, okanye iibhloko zetheminali ezilinganiswe ngohlobo locingo (umz., ikopolo okanye ialuminiyam). Iingcingo zokuqhawula zibe kubude obuchanekileyo (ngokuqhelekileyo zi-½–¾ intshi) usebenzisa isihluli socingo. Gwema iteyiphu yodwa kwiziqwenga; izikrufu torque ukuya specs umenzi ukunqanda uqhagamshelo oluxengayo.

 

·  Ukuqesha umntu osebenza ngombane onelayisenisi kwiiprojekthi ezintsonkothileyo zokufaka iintambo.  Oku kubandakanya iisekethe ezintsha, ukuphuculwa kweephaneli, okanye ukusebenza kwiindawo ezimanzi / ezimanzi. I-DIY ilungile kwimisebenzi elula efana nokutshintsha iivenkile, kodwa iipros ziqinisekisa ukuthotyelwa kunye ne-inshurensi.

 

 Iingcebiso ezongezelelweyo eziphambili 

 

•  Gqiba kakuhle zonke iisekethe.  Xhuma iingcingo ezisezantsi (ezingenanto okanye eziluhlaza) kwibhasi yomhlaba kwiphaneli. Sebenzisa iivenkile ze-GFCI ekhitshini, kumagumbi okuhlambela, nangaphandle ukuze ukhubeke kwiimpazamo zomhlaba.

 

·  Sebenza kwiimeko ezomileyo kwaye unxibe iPPE.  Sebenzisa izixhobo ezigqunyiweyo, izihlangu ezinesoli yerabha, neendondo zokhuseleko. Gcina indawo ingenamanzi.

 

·  Faka iilebhile kwiingcingo neepaneli ngokucacileyo.  Phawula kushushu (omnyama/obomvu), ongathathi hlangothi (omhlophe), kunye neengcingo eziphantsi komhlaba ukuze zichongwe lula.

 

·  Vavanya ufakelo ngocoselelo.  Emva komsebenzi, sebenzisa i-multimeter ukujonga ukuqhubeka, i-voltage, kunye ne-polarity. Fakela izixhobo zokubona umsi/CO kufuphi neendawo zombane.

 

·  Landela ikhowudi yombala kunye nokwahlula.  Gcina i-low-voltage (umzekelo, idatha) iingcingo ubuncinane ii-intshi ezili-12 ukusuka kwi-high-voltage ukuphepha ukuphazamiseka.

 

Ukulandela ezi ngcebiso kuqinisekisa ukhuseleko kwaye kuthintele imililo yombane, ebangela ngaphezulu kwe-50,000 imililo yamakhaya ngonyaka e-US kuphela (ngedatha ye-NFPA). Ukuba awuqinisekanga, yima kwaye ubize i-pro-electricity ayixoleli iimpazamo.

 

 

 Izinto eziluncedo zokuSebenzisa iiNcingo zoMbane 

 

Utyalo-mali kwiingcingo zombane zeprimiyamu-ezifana nobhedu olungenayo ioksijini (OFC), ubhedu olufakwe enkonkxiweyo, okanye ukugqunywa kwePVC/THHN ephezulu-lunika iingenelo ezibalulekileyo zexesha elide kwiindlela ezingabizi kakhulu. Ezi ngcingo zihlangabezana nemigangatho engqongqo (umzekelo, UL, CSA, okanye IEC) kwaye zisebenza ngokuthembekileyo phantsi koxinzelelo. Nazi iingenelo eziphambili:

 

·  Ubomi obude: Iyakwazi ukumelana nomhlwa kunye nokuguga.  Iingcingo ezikumgangatho ophezulu zisebenzisa iiconductors ezisulungekileyo zobhedu kunye nokugqunyelelwa okuhlala ixesha elide (umzekelo, i-cross-linked polyethylene/XLPE okanye i-thermoplastic). Baxhathisa i-oxidation, ukufuma, ubushushu, kunye nokulimala komzimba. Umzekelo : Ubhedu olubotshelelweyo luthintela ukubola okuluhlaza kwindawo efumileyo; ukugquma umgangatho kuthatha iminyaka engama-30-50 + vs. 10-15 kwi-PVC ephantsi.

 

·  Ukusebenza okuphezulu: Ukunciphisa ukulahleka kwamandla kunye nokuphucula ukusebenza.  Ukuchasana okuphantsi (kulinganiswa kwii-ohms nge-1,000 ft) kuthetha ukuba amandla amancinci achithwa njengobushushu. Ifomula : ULahleko lwaMandla (W)=I2×R ext{Ukulahleka kwamandla (W)} = I^2 amaxesha okuLahla kweRPower (W)=I2×R apho i-III ingoku kwaye i-RRR ixhathisa. Ubhedu olucocekileyo oluphezulu lune- ~ 10-15% ukuchasana okungaphantsi kuneengcingo ezisetyenzisiweyo okanye i-aluminium-core, ukunciphisa ukuhla kwamandla ombane kunye nokwakhiwa kobushushu-okubalulekileyo kwimiba emide okanye izixhobo eziphezulu.

 

·  Ukhuseleko olomeleziweyo: Ukuthintela ukothuka kunye neesekethe ezimfutshane.  Ukugquma okuphezulu (kulinganiswe i-600V +) kunye neebhatyi ezinqanda umlilo (umzekelo, i-FR-EP) zinciphisa iimpazamo ze-arc kunye nomngcipheko wokunyibilika. Iingcingo ezifakwe kabini okanye ezikhuselweyo zithintela ukuvuza kwemisinga. Inyani : Iintambo zombane ezingalunganga zibangela ~28,000 imililo yamakhaya ngonyaka (NFPA). Iingcingo ezisemgangathweni ezinomlinganiselo ofanelekileyo wokungabikho kwe-ampacity zinqanda ukutshisa kunye nokunyibilika.

 

·  Ugcino lweendleko: Kucutha ugcino kunye neemfuno zokutshintsha.  Nangona ixabiso lokuqala liphezulu ngama-20–50%, wonga ku:

o  Ukulungiswa okumbalwa/ukutshintshwa

o  Amatyala asezantsi amandla (ngenxa yokusebenza kakuhle)

o  Ukuphepha umonakalo womlilo okanye amabango e-inshurensi i-ROI Umzekelo : Ukuphuculwa kwe-$ 200 kwi-wiring yesekethe yasekhaya kunokugcina i-$ 500 + kumandla kunye nokulungiswa kwiminyaka eyi-20.

 

 IiNzuzo zeBhonasi 

 

·  Umgangatho ongcono woMqondiso  (kwidatha / iintambo zenethiwekhi): I-Shielded Cat6A/Cat7 inciphisa ukuphazamiseka (i-crosstalk, i-EMI).

 

·  Ukomelela kokusiNgqongileyo : Iingcingo ezikwaziyo ukumelana ne-UV, ukumelana ne-oyile, okanye iingcingo ezilinganiselwe ngokuthe ngqo zilungele ukusetyenziswa ngaphandle okanye kwimizi-mveliso.

 

·  UkuThotyelwa kweKhowudi kunye neXabiso lokuthengisa kwakhona : Idibana nemigangatho ye-NEC/IEC; abahloli kunye nabathengi trust branded, wire certified.

 

Iingcingo ezisemgangathweni aziphuculi kuphela ukusebenza kodwa ziqinisekisa ukuthembeka kwexesha elide, ukhuseleko kunye noxolo lwengqondo. Soloko uqinisekisa amanqaku (umzekelo, 'THHN 12 AWG CU') kwaye uthenge kubaboneleli abathembekileyo. Ucingo olushibhile luqoqosho lobuxoki-hlawula ngoku okanye uhlawule ngakumbi kamva.